Abdullah Mohammed would do anything for his daughter, even forcing himself to laugh with her at the sound of bombs to help her overcome her fear. It has been the subject of a ferocious military campaign and relentless bombardment by Russia-backed Syrian government troops since early December. As the advancing troops neared his hometown of Saraqeb two months ago, Mohammed fled with his wife and daughter further north to the town of Sarmada, where they are now staying in an abandoned house offered to him by a friend.